RRB Group-D 20th Sep 2018-shift -2
For the following questions answer them individually
The atomic number of Potassium is 19 and its mass number is 39. The number of neutrons its atom is ............
The mean score of 3 students in a test out of 25 is 18. Two new students lake the test. What is the lowest marks that can be obtained by one newcomer who scores less than the other one for the overall average of the five students to rise to 20?
A block of mass 10 kg accelerates uniformly from rest to a speed of 2 nits in 20 s. The average power developed in time interval of 0 to 20 seconds is :
The tendency of a body to resist change in a state of rest or state of motion is called ..........
Study the following figure carefully and answer the question that follows.
If the pivot is shifted 3 cm towards left, then what will be the moment of the couple at the new position?
In the circle below, chord $$\overline{AB}$$ is extended to meet the tangent $$\overline{DE}$$Â at D. If $$\overline{AB}$$ = 9 cm and $$\overline{BD}$$ = 3 cm, find the length of $$\overline{DE}$$.
Name the Indian spoitsperson who won gold in the Girls Under-12 category at the World Cadets Chess Championship, in 2017.
Who among the following is one of the founders of Banyan Nation, India's first firm to win Dell People's Choice Award for The Circular Economy' at the World Economic Forum (WEF) at Davos?
